Here is the list of all Random Encounters, which you will face in Fallout 4, there are 8 different types of Encounters listed below with the details.

Static Encounters

Static Encounters occur in a specific areas of Commonwealth.

Deceased Fellow

Detail: You chance upon a dead guy. Check his pockets for a note mentioning treasure in a [random] location.

Raiders versus Farmers

Detail: A farmer runs to ask for help as you witness a fracas.

Wounded Dog

Detail: Why not patch this dog up and name her? Later on, she might appear to help you.

Mole Rat Ambush

Detail: Whack those pesky mutations when they pop out of their holes.

Dead Meat

Detail: A dead Brahmin, Yao Guai, or other carcass you can loot.

Wild Pack of Dogs

Detail: During an exploration, you chance upon a resting pack of dogs.

Gene the Reluctant Dog Vendor

Detail: Buy a dog by using Charisma from your own settlement’s workshop.

Super Mutants and Prisoner

Detail: Free the victim from a raiding party of greenskins.

Deathclaws Duel

Detail: Two of these powerful beasts are battling.

Vicious Dogs and Farmer

Detail: Three vicious dogs are attacking a farmer ill-equipped to defend himself.

Traveling Vault Merchant

Detail: Reveal the vault location by talking to a guard.

Raiders and the Pink Paste

Detail: A dead Raider or two have some strange paste on them. Apparently this came from Suffolk County Charter School. Why not visit there?

You’ve Got Crabs

Detail: Mirelurks occasionally scuttle around and ambush you. Time to crack a few shells.

The Postman

Detail: Despicable foes have slain this postman, who has letters you can read. Some reveal locations to explore.

Stingwing versus Radscorpion

Detail: Two examples of mutated wildlife aren’t getting along.

Pickman’s Prey

Detail: A pile of dead Raiders, evocatively staged, each marked with a strange calling card, and the location of Pickman Gallery.

Vertibird versus Raiders

Detail: If the Prydwen has arrived, and the Brotherhood of Steel are active, expect death to Raiders from above before the craft heads back to Boston Airport.

Vertibird Patrol Drop

Detail: If the Prydwen has arrived, and the Brotherhood of Steel are active, expect two Brotherhood of Steel soldiers, or a soldier and scribe, to be dropped off.

Super Mutant Raiding Party

Detail: kill the greenskins party and check their leader’s corpse for a note.

Roving Eyebot

Detail: A still-functioning Eyebot plays a verbal advertisement for job openings as the Cambridge Polymer Labs. Why not head there?

Unfriendly Deathclaws

Detail: Occasionally you stumble into the frighteningly sharp fangs and claws of a roaming Deathclaw.

The Return of Manta Man!

Detail: An amateurish superhero is seen fighting Mole Rats, or a variety of enemies. Usually badly. He’s no Silver Shroud, though he only appears after you finish Side Quest: The Silver Shroud.

Jack Is Back

Detail: If you sided with Jack Cabot during Side Quest: The Secret of Cabot House, you’ll find him with Edward Deegan and can sell him items he requires.

Lorenzo Is Undying

Detail: If you sided with Lorenzo Cabot during Side Quest: The Secret of Cabot House, you’ll find him investigating dead Ghouls. How pleasant.

Vault 81 Dead Dweller

Detail: One example of how living underground extends your life is when you encounter a dead vault dweller with a note for Vault 81 and a mention of Doctor Penske.

Mutant Hound versus Yao Guai

Detail: Two brawling and sinewy animal mutations take a distinct dislike for one another.

Bloated Animal Corpse

Detail: A dead Radstag Doe, Yao Guai, or Brahmin is feeding a few Bloatflies, Bloodbugs, or Radroaches.

Super Mutant versus Stingwings

Detail: Can a green skin and his hound survive a nasty sting or two? You’re about to find out.

Feral Ghoul Ambush

Detail: A dead farmer and Brahmin are decoys for a Feral Ghoul, who lies in wait to pounce on anyone investigating.

Resting Radstags

Detail: Two Radstags are snoozing in a wilderness location. Unless you arrive and make noise.

Eyebot Advertisement

Detail: An Eyebot still outputs prewar advertising.

Two Faces. One Synth

Detail: You stumble into two men with the same face. Each claims the other is a synth. Who do you believe?

Fluid Encounters

These encounters can be occurring anywhere and their location is not pinpointed.

Smiling Larry

Detail: Have you bought anything from this trader? His two guards look tough. But if you’ve built a Level 3 Weapons Store at one of your settlements, you can offer to have him come live at any of your workshop locations.

Mister Gutsy

Detail: A Mister Gutsy is on patrol, looking for Chinese infiltrators.

Workshop Armor Vendor

Detail: Are your workshops impressive enough? If they aren’t, hire this chap. But if you have built a Level 3 Armor Store at one of your settlements, you can offer to have him come live at any of your workshop locations.

Brotherhood of Steel versus Raiders

Detail: If the Prydwen has arrived, these two factions encounter each other. Diplomatic relations are strained to nonexistent.

Brotherhood of Steel versus Deathclaw

Detail: If the Prydwen has arrived, three Brotherhood of Steel scouts find themselves facing an apex predator.

The Gossiping Trader

Detail: Chance upon a trader who has some pertinent rumors regarding the some primary locations across the Commonwealth.

Super Mutants versus Raiders

Detail: These two factions are constantly battling for territory. Usually, though, the territory is a stronghold and not out in the open.

Detail: Do you need a Brahmin for your workshop settlement? Then you’re in luck.

The Brahmin Farmer

Detail: A livestock farmer is making his way in the world.

Ness Encounter

Detail: You encounter a woman named Ness. For more information, consult Primary Location: Skylanes Flight 1981.

Radstag Herd

Detail: Up to four of these majestic, mutated beasts can be witnessed.

Preston Garvey

Detail: If you finished Minutemen Quest: When Freedom Calls, some chancer appears asking for a donation to the Minutemen. Pay up, refuse, or confront him.

Feral Ghoul Pack

Detail: You see a pack of frothing ferals.

Sated Radscorpion

Detail: A mutated wildlife encounter with these vicious stingers.

Dogs versus Mole Rats

Detail: A pack of dogs chasing a Mole Rat.

Revenge of the Forged

Detail: Complete Location Quest: Out of the Fire and you may be attacked by the Forged.

Bobbi’s Recruiter

Detail: You’re stopped and asked to help out in Goodneighbor; there’s a Ghoul named Bobbi who needs your help starting Side Quest: The Big Dig.

One Man and His Robot

Detail: Once Side Quest: The Big Dig is over, you may meet Mel again.

Swanson’s Revenge

Detail: Did you complete Side Quest: Human Error? Then you may have angered Swanson, who turns up all hot under the collar.

Vault 81 Prisoner

Detail: A group of Raiders are holding a vault dweller hostage. Can you help, and find out the vault’s location in the process?

Darla Goes Home

Detail: If you finished Main Quest: Unlikely Valentine and Darla isn’t dead, you may see her heading home.

Heading to Trinity Tower

Detail: Super Mutants are taking a prisoner to their highest stronghold. Side Quest: Curtain Call now begins.

The Exile

Detail: If Brotherhood of Steel Quest: Duty or Dishonor is complete, you may see Clarke fleeing from a group of Feral Ghouls.

Gruel’s Recipes

Detail: Did you kill a strange Raider with a chef’s hat on? Then check his corpse for some rare ingredients and recipes.

Escaped Synth

Detail: If the Institute is still active and Railroad Quest: Boston after Dark hasn’t been completed, you spot a synth in Institute janitorial attire who requests the location of Bunker Hill. Provide this information if you’ve discovered this location, or ask for Caps.

Radstags versus Dogs

Detail: An interesting conundrum: Which animal will be victorious?

Super Mutants versus Mister Gutsy

Detail: Can the greenskins overpower the pride of RobCo Industries?

Kat and Gus

Detail: A child merchant named Kat and her impressively dangerous protector Sentry Bot Gus are wandering the landscape.